B = = MIN 2πι L = Νο I W LI² 2
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter19: Capacitors
Section: Chapter Questions
Problem 1RQ: 1. What is the dielectric?
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Question
A superconducting magnetic energy storage coil is made from a toroidal ring coil (torus). The coil’s cross-sectional radius is d = 1.5 m and radius of the torus is r = 1.5 km. The torus is wound with N = 175,000 turns and is able to carry a current I = 110,000 A. a) Calculate the magnetic flux density in the torus. b) What is the amount of energy stored in the torus? c) If a city requires 500 MW of power how long can this storage ring of this type power the city in case of a blackout in power generation? Assume there are no losses in the conversion of energy from stored DC to AC energy required by standard grids. |
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